Process and apparatus for coating paper



F. P. REED. PROCESS AND APPARATUS FOR COATING PAPER. APPLICATION FILEDAPR.22, 191sv RENE ED APR. 12. 1922.

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PROCESS AND APPARATUS FOR COATING PAPER. APPLICATION FILED APR. 22.1919. RENEWED APR. 12.1922. 1,432,784.

Patented Oct. 17, 1922,

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Patented 0d. 17, 1922.

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FREDERIC PAYSON REED, OF EAST ORANGE, NEW JERSEY, ASSIGNOR, BY MESNEASSIGNMENTS, TO CHARLES C. ORCUTT.

PROCESS AND APPARATUS FOR COATING PAPER.

Application filed April 22, 1919, Serial No. 291,918. Renewed April 12,1922. Serial N0. 552,062.

7 '0 all whom it may concern:

Be it known that I, FREDERIC PAYSON EED, a citizen of the United States,residing at East Orange, in the county of Essex, State of New Jersey,have invented certain new and useful Improvements in Processes andApparatus for Coating Paper; and I do hereby declare the following to bea full, clear, and exaot'description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to a method of and apparatus for coating paper,and is a development of the invention disclosed in my prior application,Serial No. 241,102, filed June 21, 1918.

According to the invention, a continuous web or sheet of paper is givena colored or tinted surface to render it suitable for use for candyboxes, a lining for as a covering the covers of books of record, acovering for files, etc. The coloring operation is entirely automaticthroughout, whereas heretofore it has'been usual to produce paper of thecharacter stated by hand treatment, which is necessarily tedious andexpensive, besides in- ,volving a heavy waste of paper. The presentinventlonaims to continuously coat or tint a traveling web or stri ofpaper in the same general way as disc osed in my earlier application,but instead of streaking the paper by spattering it with colored flecks,the .color is applied to the paper in the form of continuous lines whichrun longitudinally preferably feather-edged, which adds greatly ance ofthe finished product and renders it particularly applicable for use aswall paper, in addition to the These lines or streaks may be ofdifferent colors, may have any desired relative arrangement or may bemade wide or narrow according as preferred, but in any instance, theyare formed'by applying a solid color in a conblades, according tothecharacter of lines to the attractive appearmain uses indicated above.

color scheme or pattern, and

desired. These lines are preferably feather edged, as has alr eady beenstated, and I obtain this feathering effect, in the case of the pens, byresiliently mounting them and by interposing between the web and itssupport a strlp of foraminous material, preferably wire netting, thearrangement being such that the pens rest upon the web, and as thelatter passes along the netting, up-and-down vibratory movement, whichis almost imperceptible, is imparted to the pens; and this vibratorymovement, although very slight, necessarily produces slight variationsin the pressure of the pens upon the web, whereas, when the netting isomitted, then the pressure of the pens would be uniform and thefeathering will be by no means so pronounced, although, of course, somefeathering effect is necessarily present, due to the fact that the webis moistened before being subjected to the action of the pens. It isalso possible, both with the pens and with the blades, to obtain sinuousinstead of straight lines, by imparting a reciprocatory movement in somesuitable manner to the carriage on which the pens or blades and the.color tank or trough are mounted,

The invention also comprises the feature of printing the colored paper,and it accordingly resides in the provision of an improved device forproducing this type of ornamentation. The printing may be applied uponthe streaks or stripes of color, or in the spaces between the streaksand in the latter instance, they may be of the same color as the streaksthemselves. In the former instance, the printing are of colors whichcontrast with those of the streaks.

The invention further comprises an improved device which admits of theautomatic lifting of the web above the netting simultaneously with thestoppage of the drive, but such device is also capable of being actuatedboth to permit the drive to be started without lowering the web upon thenetting, and conversely, to lower the web without entailing the startingof the. ma

chine. I

With the above and other objects in view, the invention consists in theconstruction, combination and arrangement of parts, features and steps,all as hereinafter fully described. An embodiment of the invention,which, for all present purposes, may be con- 3 v chine, and it istherefore suflicient to statesidered as preferred, is illustrated in theaccompany drawings, but it is to be understood that the invention is notllmited to such embodiment but, on the contrary, is susceptible ofsubstantial modification and change, while still-falling within thescope of the appended claims.

In the drawings, Fig. 1 is a fragmental longitudinal vertical section,with parts in side elevation, of a machine constructed in accordancewith the invention, and equipped with the improvements above specified;

' Fig. 2 is an enlarged detail view, in plan, of the combined controlfor thepaper and the drive;'

Fig. 3 is an enlarged fragmental vertical section showing the embossingdevice and its position with relation to the streaking devices, two ofwhich are illustrated;

Fig.4 is a plan view of Fig. 3; and

Fig.5 is) a detail perspective view of one of the'blades which areutilized when-relatively wide streaks or stripes are to be produce aReferrin more particularly to the drawing's, tllGI'BlS represented inFig. 1 a machine which is generally similar to the one dis- I closed inmy prior application above identia fied. Reference may be had tothisapplication for adetailed description of the mathat the machinecomprises a framework, at

the frontend ofwhich is rotatably mounted the roll 1 of paper to becoated, which may be ordinary white paper of the character commonly usedfor making this class. of

goods. As the sheet or web of paper unwinds from roll 1, it passesthrough a train of tension rolls 2, then around a larger tension roll ordrum- 3, and then over -a guide roll 4 to the coating means. The latterpreferably comprises a pair of felt covered rolls 5, which are suppliedwith liquid from a tank 6.- In the present instance, the coating rollsrest upon and are frictionally driven by a pair of rolls 7 which dipinto the tank, al-

.though this arrangement is not essential,

since the rolls 5 may themselves contact directly with the liquid in thetank. Thereafter, the web passes around a rotating drum 8, where theexcess liquid is removed and that remaining on the web is more uniformlydistributed and worked in.

The means for removing the excess liquid may consist of a pair ofSqueegees 11 and 12, the free ends of which are covered with felt whichbears yieldingly against 'the' paper and scrapes off the excess liquidinto a pan likewise is pivotally mounted in the framepart and adjustedbythreaded rods 19. Y

. arranged at suitable intervals apart in 'a row 'ings provided in apair of upstanding brackieleased when an adjustment of the squeegee isdesired. The distributing device preferably consists of' areciprocatinghead 18 WhlCh is. identical with 'the corresponding part in the earlierconstruction, and is mounted and. operated in'the'same way'as thatAfter. passing the squeegees and the distributor, the paper moves.rearwardly toward the coloring and drying mechanisms or devices. The'coloring devices, which embody, the most important features of theinvention, preferably consist, as previously I stated, of a series ofspaced parts or members which are supplied with liquid color from asuitable trough or tank.'- Where it is desired to obtain. relativelynarrow streaks, thecoloring devices are in the nature of pens which aregenerally similar to the pens employed in ruling machines. These pensare indicated at 20in Figs. 2 and 3, and'they; are

transversely of the web, the pens being. integrally connected with abaseor head 21 which is clamped between a pair of'superposed horizontalblocks 22 .a'nd .23, tlfese blocks being fastened togetherbytistuds 24and uniting to form a carriage whichv is. disposed transversely of themachineand is pivoted along its rear edgeto a pair-"bf rods 25'which arethemselves supported in bearets26 mounted upon the side members of theframe. The carriage is designed to support a removable tank 27containing the liquid' color to be applied,the tank consisting of anelongated pan or trough which 0 is provided upon its rear face with adepending arm 28, the free lower end of which is designed to be insertedbehind a strap or clamp 29 which is fastened to the rear edge face'ofthe carriage. The width of the pan or trough is less than that. of thecarriage, and between the latter and the trough there is interposed astrip 30 of felt, the free forward-portion of which isuncov'ered. Liquidcolor is supplied from the trough by capillary attraction to' the ,feltstrip 30 by means of a plurality of wicks 31 which contact at theirouter ends with the felt strip and have theirinner ends submerged in theliquid color. The color thus supplied to the felt strip is supplied inturn to the pens 20 by means of a second series of wicks 32 which extendfrom'the felt strip to the .pens

in the manner indicated in Figs. 3 and 4. In this way the pens areprevented from having which is illustrated in an excessive quantity ofcolor. supplied to them, the streaks or stripes, this can be readilydone by turning back their feeding wicks 32 upon the carriage.

There may be any desired number of coloring devices, all of which willbe of counterpart construction and two of which are here illustrated.Each trough will in such case be filled with liquid of a differentcolor, and the pens of the various sets will be arranged in alternatingor staggered; relation to produce the desired relative disposition ofthe different colors. In other words, a great variety of patterns can beproduced by changing the arrangement of the sets of pens with relationto each other with resultant changes in the c lored effects produced bythe pens.

.As already explained, the lines or streaks produced by the pens 20 arecomparatively narrow, and have 'a decided feather effect. This is due toweb there is interposed a layer of woven wire screen 34 or othersuitable foraminous material. The pens rest upon the Web, and as thelatter moves along over the wire screen, the pens will have imparted tothem a slight up-and-down movement, which is due to the fact that thepoints of the pens bear upon the web directly over the interstices ofthe netting so that the movement of the web tends to imperceptiblyvibrate the pens. Actual experiments have shown that this featheredeffect disappears almost entirely if the web is allowed metal shield orarch 33 instead of upon the netting. In case it is desired to producewider lines or stripes, then the pens are replaced by a series of metalblades 35, one of Fig. 5. These blades 35 are resiliently mounted on thecarriage in much the same way as the pens and each is provided with astrip of felt 36 which enthe carriage. support any one of the carrlagesin such a cases its free lower portion and isv designed to contact withthe web. Color is supplied to the blades by means of thetwicks 32 aswill be understood.

The streaking devices, whether in the form I of pens or,blades, are heldagainst the web by gravity,.due to the pivotal mountingof It ispossible}, however, to

position that the streaking pensor blades will be raised above the web,in case it is desired to cut out the lines which would otherwise beformed by thalj set. Accordingly, there is pivoted to each end of thecarriage an arm 37 which carries at its outer end a screw stop'38, thelower end of Which is designed to engage a boss 39 provided on an arm 40which is pivoted upon the top of the corresponding side member of theframe. Whdn the lower ends of the screws 38 rest and if it is desired tocut out any of the fact 'that between the to rest directly uponthetweenthe drum 8 and .the other drum upon the bosses 39, then thecarriage will be supported in raised position with the streak"- ingdevices out of contact with the web, but when the screws are moved, outof the path of the bosses, then the carriage will be lowcred and thestreaking devices will be caused to bear upon the Web. The carriage ishere shown as stationary, but it will be understood that if desired, thecarriage may be reciprocated endwise through the intermediary orsuitable devices, in which case the lines or. streaks produced will beof sinuous or zig-zag character. effecting this reciprocat'ory movementis immaterial to the invention, and hence, is not illustrated.

l The device for printing the web is here shown as comprising a set ofdisks or wheels 41 which are mounted in spaced relation upon ahorizontal shaft 42 journaled in brackets 43 mounted on the tops of theframe sides. The peripheries of these disks 41 have attached to them atregular intervals apart, a series of stamps or equivalent devices 44Which are cut into the form which the printings are to have and whichprint directly upon the web. The stamps 44 may be of felt, rubber,'orother suitable material, and as will be understood, they may have anydesired shape. The disks 41 which carry the stamps are adjustable alongthe shaft 42, so that the The precise means for 4 printing may takeplaceeither upon the streaks formed by the pro v cedingset of pensgor in thespaces'between such streaks, and where two sets of streaking devices areemployed, as in the construction illustrated, the printing device willbe located between the two. Color is'su-pplied to the stamps on thedisks from a trough 45 in which a coating roll 46 dips, this coatingroll running incontact with a felt covered roll 47 likewise mounted inthe brackets 43. The felt covering travels in contact-with the stampsand acts to ,ink them.

The coated web is dried in the same way as that disclosed in my earlierapplication; that is to say, it is subjected to heat of veryconsiderable intensity while traveling( be-. not shown) at the oppositeend of the machine. This heat is supplied by a plurality ofgas burners48 extending, transversely of the machine and. each having a largenumber of small jets playing directly against the under side of themetal shield or arch 33. The

superimposed wire nettingor screen 34 dis- In order that there may be noover-heating of the paper above the burner, when for any reasonthemachine must be stopped, mechanism is provided for lifting the web outof contact with the wire netting, as in the earlier construction, andthis mechanism is coupled up to a device for throwing the drive into andout of action, so that when the machine is stopped, the paper will beautomatically raised. Referring to Figs. 1 and 2, the drive shaft 49carries fast and loose pulleys 50 and 51, from one to the other ofwhich. the belt 52 is adapted to be shifted'by means of a fork 53carried by a bar or lever 54. The web of paper overlies a plurality ofsmall transverse rods 55 which are supported at their ends by arms 56,connected together by a pair of horizontal bars '57, one at each side ofthe machine, each arm pushed longitudinally, the arms 56 will be causedto swing about their pivotal supports into the positions indicatedindotted lines, and the rods 55 will lift the web above the netting. Theinner ends of the bars 57 are pivotally connected to a toggle 59, thecomponent members of which are in turn pivoted to a vertical rod 60carrying a weight 61. The lower portion of this rod 60 is provided witha catch 62, which, in the normal position of parts, engages the lug 63provided on a bar 64 which is mounted to slide endwise between andparallel with the shaft 49 and the bar 54. The bar 64 is also providedwith a finger 65 which extends downwardly therefrom into the path of across-piece 66 pivoted centrally upon the bar 54, so that when thelatter bar is pushed inwardly, its cross-piece 66 will strike the finger65 and thereby shift the bar 64 in the same direction, with the resultthat the lug 63 will be disengaged from the catch 62 on the rod 60. Therod 60 will then drop, due to the action of its weight 61, and willstraighten out the toggle 59, thereby producing the endwise movement ofthe bar 67 and the resultant lifting of the web. Thebars 54 and 64 aresuitably guided and supported in the frame and the first-mentioned barhas connected to it a flexible metal rod 67 which is pivoted at itsinner end to the cross-piece 66 and is provided intermediate its endswith a pin 68 that normally fits in an openin provided in a lug 69secured to bar 54, though this arrangement may be reversed and the pincarried by said lug. 'The rod 67 -'can be bent'upward to effect thedisengagement of pin 68 from its perforation or seat, and said rod 67can thereafter, be pushed inward, with the result that the cross-piece66w1ll be moved out of the path of finger 65 on bar 64. Consequently,the bar 64 can then be pulled outward to latch the lifting device, whichhas been previously reset, in operative position, without entailing anyreturn movement of the belt from the loose pulley 51 to the fast pulley50. Conversely, ft is also possible, if the rod 67 hasv been uncoupledfrom the bar 54, to push the latter inwardly and shift the belt onto theloose pulley without affecting the lifting device 1n any way. It is alsopreferable to provide means for automatically lifting the web off thecoating rolls 5 at the same time that it is raised above the wirenetting, said means being so constructed as to be operated automaticallyby the first mentioned lifting device, while yet being capable ofindependent operation with respect thereto. In the form illustrated, atransverse rod 69 is arranged between the rolls 5 in position tounderlie the web and is suspended at its ends from pivoted links 7 0,only one of which appears. These links are carried by a pair of levers71 which are fulcrum'ed intermediate their ends on the frame sides, andeither of said levers may be engaged by a laterally projecting pin 72carried by the lower end of the adjacent arm 56, which is. extendeddownward for that purpose as indicated in Fig. 1. The other end ofeachlever 71 is engaged by a. stop 73, that serves to normally hold thelever in lowered position.

Afterhaving been coated and dried in the manner above described, the webfinally passes over a guide roller 74 located adjacent the roll 1 andthrough tension rolls 75 to a power driven winding drum 76, where it iswound up as a finished roll, the pull of the drum 76 being utilized tounwind the paper from roll 1 and cause it to travel through the entiremachine.

I claim as my invention 1. In a coating machine, the combination withmeans for moistening one face of a continuous web, of a source of colorsupply, a

row of devices disposed transversely of the web to receive the colorfrom said source of supply and apply it to the moistened face of the webin definite streaks, said devices having)their free ends bearingdirectly upon the we and means for drying the moistened and colored web.

2. In a coating machine, the combination with means for moistening oneface of a continuous web, of means for applying color to said moistenedface in definite streaks, and

means for printing the web.

3. .In a coating machine, the combination with means for moistening oneface of a continuous web, of means for applying color to said moistenedface in definite streaks, and 1 ing liquid color to said moistened facein definite streaks, and means .for imparting a slight up-and downvibratory movement to said streaking means, whereby the streaks aregiven a feather-edge.

6. In a coating machine, the combination with means for moistening oneface of a continuous web, of a support along which the Web is arrangedto travel, a source of color supply, a series of pens to which color isdelivered from said source of supply for marking definite lines upon theweb, and means for imparting a slight up-and-down movement to said penswhereby the lines are given a feather-edge.

7. In a coating machine, the combination with means for moistening oneface of a continuous web, of a support along which the web is arrangedto travel a strip of foraminous material interposed between the web andthe support, a source of, color supply, and a series of pens to whichthe color is delivered from sald source of supply for marking definitelines of color on said moistened face, said pens having their pointsresting on the web directly above the intersticesof the foraminousstrip, whereby the pens are vibrated durin the travel of the web to givethe lines a feat er-edge.

8. In a coating machine, the combination with means for moistening oneface ofa continuous paper web, of means for applying color in continuousstreaks upon said IIIOIS- tened face, and a set of printing devices fori stamping figures upon said web having a predetermined position withrelation to the streaks.

9. In a coating machine, the combination with means for moistenin oneface of a continuous web, of means or applying color n continuousstreaks upon said moistened face, and a set of printing wheels forstamping figures on said moistened and colored face, said wheels beingadjustably mounted to alternatively stamp the figures upon the streaksor in the spaces between the streaks.

10. The method of coating a continuous web which consists in moisteningone,face,of the web, applying color on said moistened face in definitestreaks, and thereafter print ing figures on the moistened and streakedface in predetermined position with relation to the streaks.

11." In a coating machine, the combination with means for applying aliquid color to one face of a continuous web, of driving 'means forimparting a traveling movement to the web, a support over which the webis arranged to travel, and a device operable at V will to simultaneouslydisconnect the drivingmeans and lift the web above its support.

12; In a coating machine, the combination with means for applying aliquid color to one face of a continuous web, of driving means forimparting a traveling movement to the web, a support over which the webis arran ed to travel, a'device for lifting the 'web a ove its support,a device for disconnecting the driving means, and aconnectlon betweensaid lifting device and said disconnecting device for operating both ofthem simultaneously, said connection being releasable to permit onedevice to be operated independently of the other.

In testimony whereof I aflix my signature.

FREnERic PAYSON REED,

